School of Environment, Northeast Normal University, Changchun 130117, China.
School of Environment, Northeast Normal University, Changchun 130117, China; Jilin Engineering Research Centre for Municipal Wastewater Treatment and Water Quality Protection, Changchun 130117, China.
J Environ Sci (China). 2016 Dec;50:65-71. doi: 10.1016/j.jes.2016.05.021. Epub 2016 Jul 1.
The presence of mutagenic and carcinogenic nitrosamines in water is of great concern. In this study, seven nitrosamines including N-nitrosodimethylamine (NDMA), N-nitrosodiethylamine (NDEA), N-nitrosomethylethylamine (NMEA), N-nitrosopyrrolidine (NPyr), N-nitrosopiperidine (NPip), N-nitrosodi-n-propylamine (NDPA), and N-nitrosodi-n-butyl-amine (NDBA) were investigated in river water and ground water samples collected from 5 representative cities (Jilin, Songyuan, Harbin, Jiamusi and Tongjiang) along the Songhua River. The total concentrations of nitrosamines in ground water were n.d. (not detected) to 60.8ng/L, NDMA was the most frequently detected nitrosamines in ground water, followed by NDEA and NPip. Relatively high detected frequency and concentrations of NDMA were also observed in river water samples, and the total nitrosamines' concentration at midstream is always higher than that at upstream and downstream. After 24hr chlorination, concentration of NDMA, NDBA was obviously increased but NDEA was reduced. Furthermore, UV showed a better relationship with NDMA-FP rather than dissolved organic carbon (DOC), NH-N, and TDN.
水中存在致突变和致癌的亚硝胺，这引起了极大的关注。在这项研究中，检测了 7 种亚硝胺，包括 N-亚硝基二甲胺（NDMA）、N-亚硝基二乙胺（NDEA）、N-亚硝基甲基乙胺（NMEA）、N-亚硝基吡咯烷（NPyr）、N-亚硝基哌啶（NPip）、N-亚硝基二正丙胺（NDPA）和 N-亚硝基二正丁胺（NDBA），它们存在于松花江沿线 5 个代表性城市（吉林、松原、哈尔滨、佳木斯和同江）采集的河水和地下水样本中。地下水中亚硝胺的总浓度为 n.d.（未检出）至 60.8ng/L，NDMA 是地下水中最常检测到的亚硝胺，其次是 NDEA 和 NPip。在河水样本中也观察到 NDMA 的检测频率和浓度相对较高，中游的总亚硝胺浓度始终高于上游和下游。经过 24 小时氯化后，NDMA 和 NDBA 的浓度明显增加，但 NDEA 的浓度降低。此外，UV 与 NDMA-FP 的关系要好于与溶解有机碳（DOC）、NH-N 和 TDN 的关系。
